Grinding-mill.



PATENTE'D NGV.` 24, 1903;

J. Q. ADAMS'. GRINDING' MILL. n PLIoLTIoN FILED HAYAN', 1901.

I No. 744,705.

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N0.'144,7o5. PATENTED Nov. 24, 1903.;

' J. 'Q.- ADAMS.

GRINDING MILL.

. APPLIOATIONFILBDIAY-17,1901.

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No. 744,705. PATENTED NOV. 24.,- 1903.

J. Q. ADAMS. GRINDING MILL.

APPL'IOATION FILED HAY 17, 19Q1.

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No. 744,705. PATENTE-Nov. 24, 190s..

' ;r. Q. ADA-Ms.

GRINDING MILL.

APPLICATION FILED MAY 17, 1901.

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UNITED STATES atented vlievernber 24, 1903.

PATENT] OFFICE.

JOHN Q. ADAMS, OF MARSEILLES, ILLINOIS.

GRINoiNe-MiLL.

SPECIFICATION forming part of Letters Patent Naf/44,705,` dated November24,1903.

Application filed May 17. 1901.

To all whom t may concern.-

Be it known that I, JOHN QUINCY ADAMS, a citizen of the United States,residing in Marseilles, in the county of Lasalle and State of Illinois,have invented certain new and useful Improvements in Grinding-Mills, of

which the following isa specification.

My invention is concerned with improvements in the construction ofgrinding-mills such as are adapted to grindcorn and other forms of feedand is intended to provide for the ready adjustment of the inner burrelative to the outer one and to provide a cheap and simple constructionof the parts, allas will be fully described in the following speci-Iication and particularly pointed out in the claims.

Referring to the accompanying sheets of drawings, in which the samereference characters are used to designate identical parts in all thefigures, Figure 1 is a perspective view Fig. 2 is a central sectionthrough the body of the mill. Fig. 2a is a side elevation of a portionof the inner bur. Fig. 3 is a plan View of the supporting baseplate ofthe machine. Fig. 4 is a plan view of the master-gear. Fig. 5 is a planview of the covering base-plate. Fig. 6 is an inverted plan view of thevertical movable bearingcup by which the inner bur is raised or lowered.Fig. 7 is a perspective View of one of the bearing-studs for the idlegear. Fig. 8 is a perspective view of the adjusting-lever. Fig. 9 is aplan view of the bur-gear casting. Fig. 10 is a side elevation of thesame. Fig. 11 is an inverted plan view ofthe bottom section of the innerbur. Fig. 12 is an inverted plan view of the next to the bottom sectionof the bur. Fig. 13 is an inverted plan view of the next tothe topsection of the bur. Fig. 14 is an invertedplan view of the top sectionof the bur. Fig. 15 is a side elevation of the same. Fig. 16 is a topplan view of the pair of feeding-Wings, and Fig. 17 is an inverted planview of the annulus constituting the lower portion of the stationaryouter bur.

The scale of the different figures is not uniform, as some of the detailviews are on a larger scale than others in order to better illustratesome of the details of construction.

Referring to Fig. 1, 20 represents the recsrin No. 60.649. (No moansover the end of which the guy-rods 24 areA passed to securely anchor themilliu the place Where it is to be used. Journaled in the cup formed bythe vertical annular ange tangular wooden framework, open at one end,`upon which machines of this kind arevordi- 25 and resting upon thehorizontal annular bearing-surface, 26 is the annular bearing edge 27 ofthe master-gear 28, which, as will be seen from Figs. 2 and 4, consistsof the substantially annular horizontal portion 29, provided with therectangular offset 30, upon which the end ofthe tongue 31 is secured,and the oppositely-disposed hook 32,11pon which is secured one end ofthe tie-rod 33, the otherend of which is secured to the outer end of thetongue 31. The vertical flange ofthe mastergear has formed on its innersurface the gearteeth 34, which mesh with the three idle pinions35,which are journaled upon the bearingstuds 36, which have the squaredlower ends 37 set into the correspondingly-shapedsockets 38 in theradial arms 39 of the spider-like supporting base-plate 21. The coveringbaseplate 40 (shown in plan vieW'in Fig. 5) is of the annular shapeshown and has the'downwardly-proje'cting flange 41 at its outer end,

which takes over the upwardly-'projecting annular iiange 42 just insideof it onthe mastergear 28. It has formed on the end side thereof thecircular sockets or depressions' 43, into which the upper ends of thebearing-studs 36 project,these bearing-studs thus having the additionalfunction of supporting the weight of the covering base-plate and theparts above it. This covering base-plate 40 is provided is provided atevery one hundred and ltwenty degrees with the'slot'ted ears 45.Intermediate of these slotted ears are the lugs 46,whic'h take into thecorresponding recesses 47, formed in the horizontal [lange 48,projecting outward from the bottom of the annulus 49, which constitutesthe lower portion of the stationary outer bur. (Shown in inverted planView in Fig. 17.) This annulus 49 is ofthe shape shown in section inFig. 2 and has the outwardlyinclined lower portion 50 and the substan,-tiallyvertical upper portion 51, and its innerfwiththeouterverticalannularflange44,which j face is corrugated, asshown, and the metal of which it is composed is chilled to give it thegreatest possible hardness, as the heaviest portion of the grinding isdone between this portion of the outer bur and the adjacent portion ofthe inner bur. Resting upon this annulus 49 is thecorrespondiugly-shaped lower end 52 of the tubular casting 53,constituting the main portion of the stationary outer bur. This castingis offset, as seen at 54, where it rests on the annulus 49, so that thecorrugated innersurface of the annulus 49 is practically continuous withthe corrugated inner surface of' the tubular casting 53. The bottom ofthis casting terminates in the annular horizontal flange 55, which isprovided with the slotted ears 56, which are placed directly over theslotted ears 45, so that the bolts 57, passing through the slotted ears45 and 56, serve to clamp the tubular casting 53 securely to thecovering base-plate 40, with the annulus 49 interposed between them inthe manner described. Bolted to the upper end of the tubular casting 53is the funnel-shaped metallic hopper 58, into which the corn or othermaterial to be ground is thrown. Also bolted to the inside of thecasting 53 is the yoke 59, which is of the shape clearly shown in Fig. 2and which is provided at its center with the enlargement 60, which isbored to form a bearing for the upper-end ofthe inner revolving bur.

The supporting-base 2l has formed at the center thereof and supported bythe radial arms 39 the annulus 61, which has the annular cam-Hange 62,forming the inner portion thereof. This cam-flange, as best shown inFig. 3, has its upper face consisting of three cam-surfaces 63, whichcoperate with three complementary cam-faces 64, formed on the undersurface of the fiange 65, projecting outwardly from the outer end of thebearing-cup 66, as best shown in section in Fig. 2. The main portion ofthis cup 66 extends down through the aperture formed in the annulus 6lof the su pporting base-plate and has formed on its lower end the pairof downwardly-projecting squared lugs 67, which take into the elongatedsquared aperture 68, formed in the inner end of the adjusting-lever 69,so that by passing the set-screw 7() through the slot 68 and into thescrew-threaded aperture 7l, formed in the bottom of the bearing-cup 66,the adjusting-lever can be securely clamped to the bearing-cup. Thisadjusting-lever 69 has the bent portion 72 therein, which serves tobring its outer portion directly beneath the annulus ofthe supportingbase-plate, and this adj Listing-lever is provided with the overhangingarm 73, secured thereto, which projects over the ange 74, formed on thecorresponding edge of the supporting base-plate 2l, and by means of thebolt 75 and the thumbnut 76 the arm 73 can be drawn down upon the flange74 to clamp the lever 69 in any desired position of adjustment. Byreason of the cam-faces 63 on the supporting base-plate cooperating withthe cam-faces 64 on the bearing-cup it will be apparent that as theadjusted lever 69 is thrown back and forth the bearing-cup 66 will beraised andlowered correspondingly. The upper surface of the bearing-cupis concaved, as shown at 77, and

receives the bearing-ball 78, upon which rests the concaved end side 79of the bur-gear casting 80. This bur-gear casting 80 consists of thecup-shaped lower portion 8l,which has the gear-teeth 82, which mesh withthe idle pinions 35, formed on its outer surface. A yoke 83 is castacross the top of this cup. Projecting outwardly from the top of thegear portion is the horizontal iange 84, constituting an annulus, whichhas at its outer edge the vertical annulus 85, which for lightness hassome of its upper portion cut away, as clearly shown in Fig. l0. Itisprovided with the three vertical ribs 86, which terminate at their lowerends in the enlargements 87, thus forming the shoulders 88, upon whichrest a portion of the inner edge of the flange 89, forming the bottom ofthe lowermost section 90 ot the bur. This annulus 89 has the recesses 91in the edges thereof, into which the ribs 86 take, so as to prevent anyrotation of the burgear independently of the bur. Projecting downwardlyfrom the outer ends of the flange annulus 89 are the sweeper-lugs 92,which, as seen in Fig. 2, take into the channel 93, formed on the upperside of the covering base-plate 4l between the outer vertical flange 44and the inner vertical ange 94. At suitable intervals between the idlepinions 35 are formed the discharge-openings 95, into which the groundmaterial which is fed into the channel 93 is swept by the lugs 92. Tocarry the grinding below the idle pinions35,surrounding the recesses95,the flanges 44 and 94 are extended downward, as seen at 96 and 97,and connected by the cross-flanges 98, so as to form a passage for theground material. As is best seen in the sectional View in Fig.A 2, thelowest section 90 of the inner revolving bur has the inclined portion99, cooperating with the somewhat less inclined portion 50 ot' the annnlus 49, and the inclined portion 100, cooperating with the somewhatless inclined portion 5l of the annulus 49. The ribbed outer surface ofthis lowermost section is, like the inner surface of its coperatingannulus 49, chilled to make a very hard and efficient griuding'surface.The next to the bottom section lOl of the inner bur is an inclinedannulus having its outer surface corrugated or ribbed like the outersurface of the bottom section and provided on its inner surface with thethree lugs 102, having the squared lower end, which take into thecorresponding recesses 104, formed in the upper end ot the verticalflange 85 of the bur-gear casting 80, these lugs and recesses beingemployed to securely connect the parts together.

The next to the uppermost section 105 of the bur is a hollow frustum ofthe cone, having the same inclination as the section im meone'hundredand twenty degrees in order to.

readily position them and at .the same time hold them from movement. Theouter snrface of Vthese three lowermost sections is corrugated, as shownin Fig. 2a, and these corrugations, as shown, are preferably made deeperat the upper end of the section 105. The uppermost section 108 ishollow, like the other sections, and in the form of a truncatedpyramid,having the lugs 109 onits lower edge fitting into thecorresponding recesses 110 on the upper edge of the section 105 for thesame purpose as the corresponding lugs 106 and recesses 107, previouslydescribed. The section 108 is provided with the three wings 111,whichserve to start the corn in its downward movelease it and cause it todescend further into the burs. The upper end of the section 108terminates in the hollow sleeve 112, which has the lugs 113 on its upperend, which project into the recess 114, formed on the -under side of theplate 115, which carries the two feeding-wings 116. (Shown in Figs. 2and 16.) An eyebolt 117 has its eye passed through the yoke 83 andextends up through the sleeve 112 through the aperture 118 inthe piece115 and is provided wit-h the nut 119, by which the various partsconstituting the burare securely clamped together and held from anypossible relative movement. With this built-up construction of the burit will be seen that I have produced an extremely simple device that canbe readily cast and asf sembled in position and any part of which can bereadily replaced in case of any breakage.

To assist the bearing-studsl 36 in holdingl the covering base-platerigid relative to the supporting base-plate, I form the circular lugs120 on the supporting base-plate pro-A jecting upward from the portions121 of the web of the base-plate. These projections 120 have the squaredapertures 122 therein, adapted to receive the squared end of the bolt.Cooperating with these lugs or projections 120 are the sleeves .123,(shown` in dotted lines in Fig. 5), which project downwardly from thecovering base-plate/LO over the projections 120 and have their lower endresting on'the web 121. Bolts are passed through the apertures 122,'through the sleeves 123, and through the apertures 124 above them in thecovering base-plate 40,- and by means of nutsl copera ting with boltsthe covering base-plate and the supporting base-plate can be securelyclamped together.'

` Asbest seen in Fig. 2, the ribs 125 on the revoluble bur are set atthe customary in-` eline and have their upper ends projecting fartherout from the body than the lower portion, so as to bring them closer tothe stationary bur. The upper ends, as seen in Fig. j 2a, being squareand projecting forwardly would tend to catch the lhusks and start themto winding about the bur, and to prevent this I form the projections126l on the bottom of the uppermost section, one for each rib 125,covering the upper end thereof. and preventing any of the h'usks fromcatching thereon.

While I have shown my invention 'as embodied in the form which I atpresent consider best adapted to carry out, its purposes,

it will be understood that it is capable of modifications and that I donot desire to be j limited in the interpretation of the followingclaims, except as may be necessitated by the state of the prior art.

What I claim as new, and desire to secure by Letters Patent of theUnited States, is

1. In a device of the class described, the combination of thecylindrical stationary bur, with the inner bur mounted to rotate thereinon a-vertivcal axis, the supporting base-plate, the bearing-cupsupported by said base-plate and supporting the bottom of the inner bur,

and means for adjusting the cup vertically while themill is in motioncomprising the cam-flanges on the cup and complementary surfaces on thebase-plate, together with means for rotating said cup; substantiallyasdescribed. d

2. In a device of the class described, the combination of thecylindrical stationary bu r,

with the inner bur mounted to rotateA therein on a vertical axis, thesupporting base-plate,

Ythe bearing-cup supported by said base-plate IOO and provided withmeans'for securing it to said base-platein any position of adjustment;substantially as described.

3. In a device of the class described, the

combination of the rotary bur, with the bears, ing-cup by which it issupported, said cup being T-shaped in `cross-section and having theannular cam-surfaces on the yunder side.

the mill is in motion; substantially as de-V scribed. 4. In a device ofthe class described, the

combination of the rotary bur, with the bear- 'i ing-cup by which itissupported,rsaid cupy s being T-shaped in cross-sectionv and having theannular cam-surfaces on the under side thereof, the supportingbase-plate having the complementary surfaces with which the camsurfacescooperate surrounding an aperture through which the vertical portion ofthe cup passes, and means for rotating said cup while the mill is inmotion comprising the lever secured tothe bottom of the cup beneath thebase-plate, extending beyond the periphery thereof, an arm on the lever,and means for clamping the lever and arm to the base-plate for securingthe lever in any desired position of adjustment; substantially asdescribed.

5. In a device of the class described, the combination with the bur-gearcasting having the yoke thereon, with the hollow bnr-sections supportedthereon, connections between said casting and sections to prevent anyrelative movement when the parts are assembled, and the eyeboltextending from said yoke through the sections and provided with the uutfor clamping said sections together; substantially as described.

G. In a device ot the class described, the combination with the bnr-gearcasting having the yoke thereon, with the hollow bur-sections supportedthereon, the feeding-Wings surmonnting the uppermost bur-section,connections between said castings, sections, and feeding-wings toprevent any relative movement when the parts are assembled, and theeyebolt extending from said yoke through the sections and feeding-wings,and provided with the nut for clamping said parts together;substantially as described.

7. In a device of the class described, the combination with the bur-gearcasting having the yoke thereon, with the hollow bur-sections supportedthereon, said casting and sections being provided with the cooperatinglugs and recesses, substantially as shown, to prevent any relativemovement when the parts are assembled, and the eyebolt extending fromsaid yoke through the sections and provided with the nut for clampingsaid sections together; substantially as described.

8. In a device of the class described, the combination of the supportingbase-plate, with the idle pinions supported thereby, the master-gearjournaled on said plate and meshing with the idle pinions, thestationary bur supported by said base-plate above the idle pinions, andthe revoluble inner bur made up of hollow sections clamped together bythe rod 117 and the lowermost one consisting of the bur-gear castingmeshing with the idle pinions; substantially as described.

9. In a device of the class described, the combination with the coveringbase-plate having the annular ange 44 on its upper surface provided withthe ears 45 and lugs 46, of the hollow cylindrical bur above it havingthe ilange 55 with the ears 56, and the annulus 49 having the flange 48between the danges 44 and 55 with the recesses 47 coperating I l 77,. I

with the lugs 46; substantially as described.

10. In a device of the class described, the combination with thesupporting base-plate, of the master-gear mounted to rotate thereon, theradially-arranged idle pinions meshing with the master-gear, thecovering base-plate having the annular channel formed therein by theflanges 44 and 94, the discharge-openings 95 in said channel between theidle pinions, the tianges on the under side of the covering base-platesurrounding said openings and forming channels extending below the idlepinions, the hollow cylindrical stationary bur supported above thecovering base-plate, and the bur mounted to rotate therein and havingthe gear on the bottom meshing with said idle pinions and thesweeping-lugs 92 cooperating with the channel; substantially asdescribed.

l1. In a device of the class described, the combination with thesupporting base-plate having the angular sockets 38 therein, of thebearing-studs 36 havingv their lower ends similarly shaped to t in saidsockets, the master-gear mounted to rotate on said baseplate, the idlepinions on said studs, the inner bur mounted to rotate on saidbase-plate and having the gear on the bottom thereof meshing with saididle pinions, and the covering base-plate resting on said studs andcarrying the outer stationary bur.

12. In a device of the class described, the combination with thesupporting base-plate having the angular sockets 38, the apertures 120therein, of the bearing-studs 36 having their lower ends shaped to litin said sockets 38, the master-gear mounted to rotate on saidbase-plate, the idle pinions on said studs, the inner bur mounted torotate on said baseplate and having the gear on the bottom thereofmeshing with said idle pinions, the covering base-plate resting on saidstuds and having the collars 123 projecting from the under side thereofand resting on said supporting base-plate, and the bolts 124 clampingsaid base-plates together; substantially as and for the purposedescribed.

13. In a device of the class described, the combination with thesupporting base-plate having the non-cylindrical sockets 38 therein, ofthe bearing-studs 36 having their lower ends similarly shaped to tit insaid sockets, the master-gear mounted to rotate on said base-plate, theidle pinions on said studs, the inner bnr mounted to rotate on saidbaseplate and having the gear on the bottom thereof meshing with saididle pinions, and the covering base-plate resting on said studs andcarrying the outer stationary bur.

14. In a device of the class described, the combination with thesupporting base-plate having the non-cylindrical sockets 38, theapertures 120 therein, of the bearing-studs 36 having their lower endsshaped to fit in said sockets 38, the master-gear mounted to rotate onsaid base-plate, the idle pinions on said studs, the inner bur mountedto rotate on said base-plate and having the gear on IOO IIO

the bottom thereof meshing with said idle In witness whereof I hereuntoset my hand pinions, the covering base-plate resting' on in the presenceof two Witnesses. said studs and having the collars 123 projecting fromthe under side thereof and resting 5 ori-said supporting base-platmandthe bolts Witnesses: t 124 clamping said base-plates together; sub- JOHNH. MCELROY, stantially as and for the purpose described. R. S. CLEMAGE.

JOHN iQ. ADAMS.

